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- U Mosi2 heating elements
- W Mosi2 heating elements
- L bent Molybdenum disilicide heating elements/mosi2 heater
- steatite ceramic
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- Contacts:Allen Wazhe
INTRODUCTION:
MoSi2 heating elements
antioxidizing layer of quartz glass (SiO2), under the high temperature oxidizing condition.
If the protective layer was damaged, the element can reform a new one,
so MoSi2 Heater Molybdenum Disilicide Heating Elements have a very good anti-oxidation properties, it also means that the heating element can be used on operation for a much longer time than
the traditional one.It is used to the highest temperature up to 1850C during oxidizing atmosphere.
According to your request, our company can produce the products of Rod , "U", "W" and "U"-right angle ,
"W'---right shapes, etc.
Molybdenum disilicide MoSi2 heating elements
1) Material grade :M1700,M1800,M1900.
2) Zhok ndard dimension (mm):3/6,4/9,6/12,7/14,9/18,12/24.
Physical property
volume density |
5.5~5.6g/cm³ |
bend strength |
5.5~25kg/cm² |
vickers-hardness |
(hv)570kg/mm² |
porosity rate |
7.4% |
water absortion |
1.2% |
hot extensiblity |
4% |
Recommend Surface load Molybdenum disilicide heater MoSi2 heating elements
Furnace Temp (C ) |
1400 |
1500 |
1600 |
1650 |
1700 |
Surface load of hot zone(w/cm2) |
<18 |
<15 |
<12 |
<10 |
<8 |
The dimension list :
The influence of operation temperature on the heater surface in a different atmosphere
Atmosphere |
The Maximum Using Temperature of Element |
||
1700 Grade |
1800 Grade |
1900 Grade |
|
NO2,CO2,O2,Air |
1700°C |
1800°C |
1850°C |
He,Ar,Ne |
1650°C |
1750°C |
1800°C |
SO2 |
1600°C |
1700°C |
1800°C |
CO,H2 |
1500°C |
1600°C |
1700°C |
WetH2 |
1400°C |
1500°C |
1650°C |
DryH2 |
1350°C |
1450°C |
1600°C |
Molybdenum Disilicide MoSi2 heating elements are used in the high temperature under
oxidizing atmosphere. It will form the SiO2 film which can keep the element from being melted.
When the temperature of element is more than 1700°C,
the MoSi2 Heater Molybdenum Disilicide Heating Elements must not be used in the temperature
between 400°C and 700°C for a long time; otherwise the element will be cremated
under the strong oxidizing function in the low temperature.
Main application :
MoSi2 heating elements can usually make use of furnace temperature from 1300C to 1800C.
It is extensively used in the industries of metallurgy, glass, ceramic refractory, cryZhok l electronic device,
industrial furnace manufacture, etc..
It is an essential ideal element when the products are sintering in the high temperature
Installation of elements
1)vertically hanging
Under normal temperature,MoSi2 ,element is very brittleness,while under high temperature it is plasticity.
So,the better way for inZhok llation if the UShape element is to hang it vertically,
to the furnace top through the support clamping chuck H.The aim of such way is to avoid putting
the mechanical stress directly to the element heat-generating end ,or the element will easily be broken.
2) support clamp
Support clamp are applied to 9/18 and 6/12 two kinds of elements respectively.
the support clamp supports the whole weight of the element and the position of the element is also 、determined by it .therefore ,it must be inZhok lled carefully to assure that the element it veryically
hungin order to prevent the element from being over heated locally,
the taper part of the element lower end must put into the furnace chamber.
Notice to Furnace Operation:
To avoid high current surges which may cause damage to Molybdenum Disilicide MoSi2 heating elements ,
the recommend Zhok rting procedure as following:
Small Furnace (Power 100KW) |
Big Furnace (Power 100KW-500KW) |
||
Furnace Temperature .C |
Voltage |
Furnace Temperature .C |
Voltage |
20-150 |
1/3 |
20-300 |
1/3 |
150-500 |
2/3 |
300-700 |
2/3 |
500-Working Temperature |
Full |
700-working Temperature |
Full |
Note: Shifting gear must be done quickly, otherwise high current surges may cause damage. |
Size: Heater Molybdenum Disilicide MoSi2 Heating Elements
Diameter of Hot Zone (D1):mm
Diameter of Cold End (D2):mm
Length of Hot Zone (Le):mm
Length of Cold End (Lu):mm
Shank spacing (A):mm
For example:
D1=6mm, D2=12mm, Le=200mm, Lu=180mm, A=30mm
Please specify as: dia6/12x200x180x30mm (D1/D2 x Le x Lu x A mm)